Technical Bad starting problem

[Andy page]

Hi .I have a 2013 fiat panda 169 ,1200 easy .
I am having problems starting it .Ihave replaced the crank sensor and the coolant sensor but still have the problem.
I have checked the fuel pressure sensor and this seems to be working .
If I remove the air filter and block the throttle body up it fires straight away and when I remove the blockage it runs sweet .
I have a code po171 lean bank 1 but don't know what to replace next
Any help would be appreciated ,I hardly use the car it's a 2013 with 18000 miles it's like new

 

[A3jeroen]

If you completely block the throttlebody and it still starts, it sucks in air after the TPS.

gr J

 

[Herts Hillhopper]

Sounds like there's an air leak after the throttle? Or the throttle is not closing? Eyes and ears a better tool to find that than a fault code...

 

[lunchbeers]

For intake leaks, a good dousing in brake cleaner will usually pinpoint where the leak is, you’ll generally notice a slight rise in engine speed as it sucks in the brake cleaner.

 

[Andy page]

Hi all . No air leaks .I replaced the fuel control valve to no effect .has the 2013 panda got a fuel filter or is it combined in the fuel pump as I have no fuel pressure on the fuel rail . Rang all the parts shops no listing for a filter

 

[varesecrazy]

Just in the pump..

How long does the pump run at MAR ignition..?

 

[Andy page]

Just in the pump..

How long does the pump run at MAR ignition..?

I think a out 6 seconds , if I keep turning on and off it seems if builds enough pressure go start .usually about the tenth time .then it runs ok but feels a bit flat on acceleration

 

[varesecrazy]

Maybe its the rail sensor at fault..?

I dont see many reports of pump issues.

Jumped timing belt is more common than that

Can you measure fuel delivery.. ?
into a bowl..or can??

 

[Andy page]

Maybe its the rail sensor at fault..?

I dont see many reports of pump issues.

Jumped timing belt is more common than that

Can you measure fuel delivery.. ?
into a bowl..or can??

Thanks I'll measure fuel delivery tomorrow. And sse if I can find the rail delivery sensor . The cars only done 18000 .the last 4 years about 150 a year it's just a spare car

 

[irc]

Just a thought... how old is the petrol?
I resurrected a 169 that had stood for about 18 months a while ago. Gummy ex-petrol deposits in all sorts of places. Once cleared out and fresh petrol added it was fine.
Apart from the siezed calipers, d-shaped tyres and fungus in the boot (but that's a whole different story!)

 

[Andy page]

Just a thought... how old is the petrol?
I resurrected a 169 that had stood for about 18 months a while ago. Gummy ex-petrol deposits in all sorts of places. Once cleared out and fresh petrol added it was fine.
Apart from the siezed calipers, d-shaped tyres and fungus in the boot (but that's a whole different story!)

Filled it up just recently .car was running fine this just started out of the blue.i checked to fuel cap and yes it is petrol I put in lol

 

[Herts Hillhopper]

has the 2013 panda got a fuel filter or is it combined in the fuel pump

The latter - is in the tank. Never seen anyone have issues with it though.